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Differential Printing Disclosure Number: IPCOM000015058D
Original Publication Date: 2002-Jan-09
Included in the Prior Art Database: 2003-Jun-20

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The problem is this: When a person has a large document, e.g. a booklet, which has embedded color photos and graphs, it is difficult to print it in an appropriate way. Either one winds up separating out the individual pages that have color photos on them, and determining on an individual basis which ones have color photos on both sides and which do not, and printing them separately and then printing black and white (text) in another print job, and possible color graphs in a third (they can be printed at 600 x 600, whereas color photos require special paper and 2400 by 1200) in a third and then hand collating, OR one simply bears the expense of using double sided glossy paper at high resolution for everything, OR one simply forgos the expense and prints everything out in black and white. This disclosure suggests that a modification to a word processor printer printer driver could be made to get rid of this problem as follows: The printer driver (and the word processor) have enough information to determine before a page is printed if it has a picture on either or both sides. If not, the printer driver tells the printer to switch (or remain) in a lower cost mode. (If necessary, the driver could generate separate print jobs for each individual page to do this.) If a color photo is on only one side of the paper, then a one side glossy paper drawer (facing the correct way) is selected (or the paper is flipped by the printer if it faces the wrong way) and when printing the picture, the printer is set into high quality glossy paper mode. When the paper is flipped over the driver signals the printer to switch to non-glossy paper, text quality mode. Note that this is important, as if glossy print is done to regular paper, it does not look good. If color pictures are detected on both sides, then double glossy paper drawer is selected, and both sides are printed in high res mode. A variation of this design would allow for lower quality printing to be selected for any text printing, and only pictures printed in the expensive, slow high quality manner.